) In a large fleet of delivery trucks, the average number that are inoperative (broken ) on any day is 2. The Company has two standby (spare) trucks that are available replacements for down vehicles.
a) What is the probability that on any given day the number of standby trucks is inadequate?
b) What is the probability that no delivery trucks will be inoperative during any two-day period?
solution i am not getting the translaiton to english
P(a) = p(b)